Power it on and look to see how full the battery is if it’s below 100%, your battery is unable to hold a full charge. Then plug it into a charger for the amount of time the manufacturer recommends. Most cell phones require about 4 to 6 hours to go from a completely drained to a full battery, so test it by letting your phone’s battery run out (under 5% battery life left). Charging Cycles Don’t Fully Recharge the PhoneĪnother sign that your battery is in need of replacement is an inability to reach a full charge on a typical charging cycle timeframe. The average phone battery is designed to last from 300-500 charging cycles, so when you get around the 18-24 month mark since you bought the phone, the battery is likely getting worn out. Since you likely charge it about once a day, each year would be around 350 charging cycles. You can also figure out how many times you’ve charged it since you first purchased the phone. When you have to recharge it in the middle of the day, or more than once a day, that’s a sure sign that your battery needs replacement. As smartphone battery life has improved, most people can use a phone for normal activities and have some charge remaining at the end of the day (although it depends on your personal usage habits). Perhaps the easiest way to figure out your smartphone battery needs to be replaced is noticing how often you need to recharge it throughout the day.

Samsung s7 battery swelling